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GS748T Smart Switch 
To configure OUI settings:
1. To add a new OUI prefix, type the VOIP OUI prefix in the Telephony OUI(s) field, 
provide a description of the prefix, and click Add. The OUI prefix must be in the format 
AA:BB:CC.
2. To delete an OUI prefix from the list, select the check box next to the OUI prefix and click 
Delete.
3. To modify information for an entry in the OUI list, select the check box next to the OUI prefix, 
update the OUI prefix or description, and then click Apply.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to 
the latest value of the switch.
5. Click Restore Defaults to restore the list to the preconfigured OUIs.
Auto-VoIP Configuration
The Auto-VoIP automatically makes sure that time-sensitive voice traffic is given priority over 
data traffic on ports that have this feature enabled. Auto-VoIP checks for packets carrying the 
following VoIP protocols:
• Session Initiation Protocol (SIP)
• H.323
• Skinny Client Control Protocol (SCCP)
VoIP frames that are received on ports that have the Auto-VoIP feature enabled are marked 
with CoS Traffic Class 7.
Use the Auto-VoIP Configuration menu to configure the Auto-VoIP parameters. Interface 
specifies all the configurable Auto-VoIP interfaces. Traffic Class displays the Traffic Class on 
which the received VoIP frames are marked.
To display the Auto-VoIP Configuration page, click Switching Auto-VoIP.